#app{
    width: 100%;
}



/*定义css，美化表格*/
table{
    border-collapse: collapse;
    width: 100%;
    margin-top: 20px;
    border: 1px solid #ccc;
    text-align: center;
    font-size: 14px;
    border-collapse: separate;
}
tr {
    height: 40px;
}
th,td{
    border: 1px solid #ccc;
}
thead{
    background-color: #e8e8e8;
}
h1{
    text-align: center;
    font-family: 楷体;
}